Shuttle-checking means for looms.



No. 871,429* l PATENTED NOV. 19, 1907.

M. MORBY. SHUTTLE CHECKING MEANS POR LOOMS.

'APPLIOATIQN FILED MAB.11, 1907.

is pic UNrTnD STATES PATENT OFFICE.

MYRON MOREY, OF MILFORD, MASSACHUSETTS, ASSIGNOR TO DRAPER COMPANY, OFHOPEDALE, MASSACHUSETTS, A CORPORATION OF MAINE.

SHUTTLE-CHECKING MEANS FOR' LOOMS.

Specification of Letters Patent.

Patented Nov. 19, 1907.

Application tiled March 11. 1907. Serial No. 361.677.

To all whom it may concern:

Be it known that I, MYRON MOREY, a citizen of the United States, andresident of Milford, county of l/Vorcester, State of Massachusetts, haveinvented an Improvement in Shuttle-Checking Means for Looms, of whichthe following description, in connection with the accompanying drawing,is a speciiication, like letters ony the drawing representing like arts.

This invention has for its object the production of novel and efficientmeans for checking the movement of and stopping the shuttle of a loom atthe proper point in the shuttle-box, so that the position of the shuttlewhen. stopped may be substantially the same pick after pick, theinvention comprehending means for exerting a iinal stop ing pressureupon the incoming shuttle, w 'ch pressure is thrown off before theshuttle is picked from the box.

The desirability of bringing the shuttle to a stop in the same place, orpractically the same place, each time it enters the shuttlebox, ismanifest, and this is articularly desirable in looms wherein the ling isreplenished automatically by the insertion of a fresh filling-carrierinto the running shuttle. Such a loom is shown in United States PatentNo. 529940, granted to Northrop November 27, 1894 and in other patentsof later datei, and the more accurately the shuttle is positioned in thebox the less the wear and tear when filling replenishment is effected.

When the shuttle is to be picked from the box it is desirable to havethe pressure thereon "diminished, in order that the icking action may beeasier and the shutt e be more free to be thrown from the box by theaction of the icker.

In t e present embodiment of my invention the nal or increased pressureis brought upon the incoming s'huttle by or through the impact of theshuttle upon the picker, and by separate and positively acting meanssuch ressure is thrown off before the shuttle Eed from the box.

The various novel features of my invention as comprehended in onepractical embodiment thereof will be fully described in the subjoinedspecification and particularly pointed out in t e following claims.

Figure 1 is a to plan view of one end of a loom lay with a shuttle-boxthereon and the shuttle in properly boxed position, with one embodimentof my present invention a plied thereto, the lay being supposed to enearing front center Fig. 2 is a rear elevation of the mechanism shownin Fig. 1, and partly broken out to show details of construction; Fig. 3is a detail in plan of a portion of the means for releasing the pressureupon the shuttle prior to the picking of the shuttle from the box; Fig.4 is a vertlcal sectional detail on the line 4-4, Fig. 1, of theeccentric support for the pressure member, to be referred to.

The lay 1, shuttle-box thereon having a.

front wall 2, back wall 3 and cover-plate 4, the picker-stick 5 and thepicker 6 carried thereby, the binder 7 pivoted on the lay at 8, andacted upon by the binder-fin er 9, and the protector rock-shaft 10 on wch said finger is mounted, with a controlling spring 11 for the saidrock-shaft l10, (see Fig. 2) may be and are all of substantiallywellknown or usual construction.

The mechanism so far described operates in the usual way, the' incomingshuttle S, Fig. 1, striking the binder 7 and forcing it to swingrearwardly against the action of the sprinv1 l1, checking the movementof the shuttle as its leading end engages and forces outward the picker6.

I have provided means to exert additional or increased pressure upon theshuttle by or through the nal outward movement of the picker, and torelease the shuttle from such pressure before it is picked from the box,and suc-h means will now be described.

At the back of the lay is secured a bracket 12 having upper and lowerbearing ears 13, 14 in which are respectively mounted the head 15 andstem 16 of an upri ht eccentric stud 17, which constitutes a siiftablefulcrum for a pressure-producing member 18 having a hub 19 surroundingthe stud between the bearings. The said'member 18 is upwardly extendedto a pointnear the inner end of the binder 7, and cooperates therewithby means`of an adjustable, headed Stud 20, Fig. 1, the outer end 21ofthe member 18 having a downward and laterally bent eX- tension 22across the path of the picker-stick when moved outward by impact of theshuttle on the icker 6.

A suitab e spring 23 acts upon the member 18 to swing it rearward andmove the extenlatch 28.

sion 22 inward when the shuttle is out of the box, a stop lug 24 on thepart 21limiting such movement. I

When the incoming shuttle enters the box it engages and is first checkedby the binder 7 in usual manner, and the impact of the Vshuttle upon thepicker throws outward the picker-stick 5 as the shuttle nears the end ofits stroke, such movement of the pickerstick acting through theextension 22 to force the inner end of member `18 against the binder.This causes an additional or increased pressure to be exerted upon theshuttle, stopping the latter at the proper point in the box, andpreventing rebound.

The harder the blow struck by the shuttle on the picker the greater theadditional force exerted by the pressure-.producing member 18, so thatthe additional pressure is thus varied automatically in accordance withthe speed of the shuttle. I

As the shuttle is practically locked in the box by the additionalpressure thereon it is manifestly desirable to release the shuttle fromsuch pressure before it is picked from the the box. This is effected byshifting the fulcrum of the member 18 in such manner thatl said memberis moved slightly, away from vthe shuttle, thereby instantly relievingthe Below the bearing 14 I secure the hub 2,5

of an arm 26 ixedly upon the depending stem 16 of the stud, as by a setscrew 27, the arm extending inward toward the center of the loom, andhaving pivoted upon its end a This latch has a tail 29, Figs. 2 and 3,normally held against the frontlface of the arm by a suitable spring 30,as in full lines, Fig. 3, the front face of the latch being preferablyconcaved, as at 31, and its rear face 32 being flat. An upturned arm 33iixedly secured to a part of the loom frame, as 34, constitutes a stop,and is located in the path of the latch as the arm and latch are movedback and forth. by the swinging movement of the lay, the relativeposition of the latch and stop being clearly shown in F ig. 1.

Herein I 'have shown a spring 35 coiled around the hub 25 and fixed atone end, the other end bearing against the arm 26 and normally tendingto turn the eccentric stud 17 in the direction of arrow 36, Fig. 3. Astop 37 on the hub limits such movement by engaging an adjacent ear 38of the bracket 12, see Figs. 1 and 2.

When the lay is beating up the shuttle enters the box and the additionalressure is exerted thereon as has been c escribed just about the instantthe latch 28 is about to engage the stop 33, as in Fig. 1, the -laythen. nearing-front center. As the curved face 31 of the latch Vengagesthe stop the latch is turned on its pivot on the arm 26, against thespring 30, and is moved into dotted line position, Fig. 3, saidlatchwiping past the stop and being immediately restored to normal positionby' its spring. Now as the lay moves back from front center the flatface 32 of the latch engages the stop 33, but the tail 29 bearingagainst the arm 26 prevents any relative movement oi' the latch, and thearm is swung oppositely to the arrow 36,'turning with it the eccentricstud 17. Such movement of the stud effects a slight movement of thepressure-producing member 18 away from the shuttle, but amply sufficientto release the shuttle from the pressure induced by said member, thusleaving the shuttle free to be picked from the shuttle-box and subjectonly to the ordinary or usual binder pressure. As soon as the arm 26 hasturned far enough to release the latch 28 from the stop 33 the spring 35restores the arm and stud to normal position, and the spring`23 acts ina similar manner upon the pressureproducing member, in readiness for thenext entrance of the shuttle to the box.

Having fully described my invention, what I claim as new and desire tosecure by Letters Patent is 1. A loom having, in combination, a layprovided with a shuttle-box, a binder, means moved directly andpositively by or through impact of the incoming shuttle into engagementwith the binder to exert additional pressure upon the shuttle throughthe binder, and a separate instrumentality operating after the lay haspassed front center to release the shuttle from such pressure before itsmovement is begun when it is picked from the box.

2. In a loom, in combination, a lay provided with a shuttle-box, abinder for the latter, a vibrating picker-stick and a picker thereon,means actuated by impact of the incoming shuttle on the picker to exertadditional pressure on the shuttle during'final outward movement of thepick`er,'and an instrumentality to release the shuttle from suchpressure by backward movement of the lay before the shuttle is picked,said instrumentality including a member mounted on the lay and acooperating member mounted on a stationary support.

3. A loom having, in combination, a lay, a shuttle-box, a binder,separate means directly and positively Amoved by impact of the incomingshuttle and into direct engagement with the binder to immediately applyadditional pressure to the shuttle, and an instrumentality to act uponsaid means and release the shuttle from such pressure by or throughbackward movement of the lay before the shuttle is picked.l

4. In a loom, in combination, a lay provided with a shuttle-box,protector mechanism including a binder, a pressure-producing memberpivotally mounted on the lay and cooperating with the binder, means todilmatically upon said member on the backward stroke of the lay todiminish the'action of the pressure-producing member upon the binderbefore the shuttle is moved to be picked.

5; In a loom, in combination, a lay provided with a shuttle-box, and abinder, pressure-producing means including a swinging member to.cooperate with the binder and operatively moved by or through theincoming shuttle as it nears the endof its stroke, a shiftable fulcrumfor said member, and means to shift said fulcrum on the backward strokeof the lay before the shuttle is picked, to change the position of theswinging member and diminish the pressure exerted thereby upon theshuttle. 6. In a loom, in combination, a lay provided with ashuttle-box, and a binder, a picker-stick and its picker, apressure-producing member pivotally mounted on the lay and coperatingwith the binder, said member having an extension in the path of thepicker-stick when moved outward by impact of the shuttle on the picker,to swing the pressure producing member against the binder and therebyincrease the pressure on the shuttle, an eccentric ulcrum for saidmember, and means to-turn the said i'ulcrum before'the shuttle is pickedand move the pressure-producing member away from the shuttle.

7. In a loom, in combination, a lay having n a shuttle-box, a binder, apicker-stick, an eccentric stud mounted on thelay, a pressureproducingmember fulcrumed on said stud and at one end adapted to coperate withthe binder, an extension on the other end of said member to be engagedand moved by the picker-stick when moved outward by the incomingshuttle, to exert increased pressure on the shuttle, an arm fast on theeccentric stud and provided with a latch, a 'fixed stop to cooperatewith the latch and swing said arm on the backward stroke of the lay, toturn the stud and move the pressure-producing member away from theshuttle, to release the pressure thereon before it is picked from thebox, the latch wiping past the stop on the-forward stroke of the lay,and a spring to return the stud to normal position.

8. In a loom, in combination, a lay having a shuttle-box, a binder, apicker-stick, a-

sprin '-controlled eccentric stud mounted on the Iay, a pressure eproducing member mounted on the stud and adapted to coperate with thebinder, means to operate said member by or through the shuttle-inducedmovement of the picker-stick to exert in creased pressure on theshuttle, and means to turn the eccentric stud and move thepressure-producin@f member away from the shut-v tle on the bac wardstroke of the lay before the shuttle is picked, to release the shuttlefrom the increased pressure.

9. A loom having in combination a lay, a shuttle-box, a binder, meansincluding a pressure-producing member and an eccentric i'ulcrumtherefor, actuated by or through impact of the incoming shuttle to exertadditional pressure thereon as the shuttle nears the end of its stroke,and an instrumentality operated by the backward movement of the lay toturn the fulcrum and move said pressure-producing member to release theshuttle from such additional pressure before it is picked.

In testimony whereof, I have signed my name to this speciiication, inthe presence of two subscribing witnesses.

MYRON MOREY. Vitnesses:

FRANK J. DUTCHER, EUGENE BEAUDRY.

